I don’t have any inside info, but there are a few things I have read about on here that could be going on.
First, it is not required that when you become a supporter that you show up on that page - you can opt in/out of being listed publicly as a supporter.
Also, @JamesChevalier has written elsewhere about the difficulties of the status page being accurate, because the queue has to be programmed to match Strava API required methods and to efficiently use as many of his daily calls as possible, which doesn’t translate into an easy way to publicly display the status as accurately as we as users might like. He has also talked briefly about how because of the “webhooks” method Strava requires, it sometimes results it out-of-order syncing of activities.